LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 923

Search options

  1. Article ; Online: A review on the application of ozonation to NF/RO concentrate for municipal wastewater reclamation.

    Deng, Hui

    Journal of hazardous materials

    2020  Volume 391, Page(s) 122071

    Abstract: Nanofiltration (NF) and reverse osmosis (RO) technology have gained worldwide acceptance for reclamation of municipal wastewater due to their excellent efficiencies in rejecting a wide spectrum of organic pollutants, bacteria, dissolved organic matters ... ...

    Abstract Nanofiltration (NF) and reverse osmosis (RO) technology have gained worldwide acceptance for reclamation of municipal wastewater due to their excellent efficiencies in rejecting a wide spectrum of organic pollutants, bacteria, dissolved organic matters and inorganic salts. However, the application of NF/RO process produces inevitably a large volume of concentrated waste stream (NF/RO concentrate), which is generally characterised by high levels of inorganic and organic substances, a low biodegradation and potential ecotoxicity. At present, one of the most significant concerns for this process is regarding the sustainable management of municipal NF/RO concentrate, due to a potentially serious threat to water receiving body. It should therefore be further disposed or treated by effective technologies such as ozonation in a cost-effective way, aiming to minimize the potential environmental risk associated with the presence of emerging micropollutants (ng L
    MeSH term(s) Filtration ; Osmosis ; Ozone/chemistry ; Waste Disposal, Fluid/methods ; Water Pollutants/chemistry ; Water Pollutants/toxicity ; Water Purification/methods
    Chemical Substances Water Pollutants ; Ozone (66H7ZZK23N)
    Language English
    Publishing date 2020-01-14
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2020.122071
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Ozonation mechanism of carbamazepine and ketoprofen in RO concentrate from municipal wastewater treatment: Kinetic regimes, removal efficiency and matrix effect.

    Deng, Hui

    The Science of the total environment

    2020  Volume 717, Page(s) 137150

    Abstract: A relatively important disadvantage of reverse osmosis (RO) application to municipal wastewater reclamation is related to management of a concentrated waste stream containing high levels of organic contaminants. The present study investigated ozonation ... ...

    Abstract A relatively important disadvantage of reverse osmosis (RO) application to municipal wastewater reclamation is related to management of a concentrated waste stream containing high levels of organic contaminants. The present study investigated ozonation performance of RO concentrate from municipal wastewater treatment in a stirred semi-batch reactor. In this work, carbamazepine (CBZ, as a representative of ozone-reactive micropollutants) and ketoprofen (KET, one of ozone-resistant organic chemicals) were selected as target micropollutants. The absence of dissolved ozone within the first 60 min corresponding to initial ozone demand (IOD) complement suggested that chemical reactions took place quite fast, and ozone mass transfer was considered as a limiting step. A complete elimination of CBZ and an excellent removal of KET were observed in this period, indicating that molecular ozone was a dominated oxidant responsible for the decomposition of the target micropollutants in RO concentrate containing initial dissolved organic carbon (DOC
    MeSH term(s) Carbamazepine ; Ketoprofen ; Ozone ; Waste Disposal, Fluid ; Waste Water ; Water Pollutants, Chemical ; Water Purification
    Chemical Substances Waste Water ; Water Pollutants, Chemical ; Carbamazepine (33CM23913M) ; Ozone (66H7ZZK23N) ; Ketoprofen (90Y4QC304K)
    Language English
    Publishing date 2020-02-05
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2020.137150
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Role of reactive oxygen species in ultraviolet-induced photodamage of the skin.

    Wei, Min / He, Xin / Liu, Na / Deng, Hui

    Cell division

    2024  Volume 19, Issue 1, Page(s) 1

    Abstract: Reactive oxygen species (ROS), such as superoxides ( ... ...

    Abstract Reactive oxygen species (ROS), such as superoxides (O
    Language English
    Publishing date 2024-01-12
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2236097-9
    ISSN 1747-1028
    ISSN 1747-1028
    DOI 10.1186/s13008-024-00107-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Viewing-Angle-Enhanced and Dual-View Compatible Integral Imaging 3D Display Based on a Dual Pinhole Array.

    Deng, Hui / Lv, Guojiao / Deng, Huan / Liu, Zesheng

    Micromachines

    2024  Volume 15, Issue 3

    Abstract: Conventional integral imaging (InIm) three-dimensional (3D) display has the defect of a small viewing angle and usually presents a single 3D image. In this paper, we propose a viewing-angle-enhanced and dual-view compatible InIm 3D display system. The ... ...

    Abstract Conventional integral imaging (InIm) three-dimensional (3D) display has the defect of a small viewing angle and usually presents a single 3D image. In this paper, we propose a viewing-angle-enhanced and dual-view compatible InIm 3D display system. The crosstalk pixel areas within the conventional elemental images (EIs) that result in image crosstalk were effectively utilized either for viewing angle enhancement or for dual-view 3D display. In the viewing-angle-enhanced 3D display mode, a composite elemental image (CEI) that consisted of a normal EI and two view-enhanced EIs was imaged by a dual pinhole array and formed an extended 3D viewing area. A precisely designed mask array was introduced to block the overlapped rays between adjacent viewing areas to eliminate image crosstalk. While in the dual-view 3D display mode, a CEI was composed of image information of two different 3D scenes. With the help of the dual pinhole array and mask array, two different 3D images were reconstructed for the left and right perspectives. Experiments demonstrated that both the left and right sides were increased by 6 degrees from the conventional 3D viewing angle, and also, a dual-view 3D display effect that retains the same viewing angle as the conventional system was achieved. The proposed system has a compact structure and can be freely switched between two display modes.
    Language English
    Publishing date 2024-03-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2620864-7
    ISSN 2072-666X
    ISSN 2072-666X
    DOI 10.3390/mi15030381
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: Ozonation mechanism of carbamazepine and ketoprofen in RO concentrate from municipal wastewater treatment: Kinetic regimes, removal efficiency and matrix effect

    Deng, Hui

    Science of the total environment. 2020 May 15, v. 717

    2020  

    Abstract: A relatively important disadvantage of reverse osmosis (RO) application to municipal wastewater reclamation is related to management of a concentrated waste stream containing high levels of organic contaminants. The present study investigated ozonation ... ...

    Abstract A relatively important disadvantage of reverse osmosis (RO) application to municipal wastewater reclamation is related to management of a concentrated waste stream containing high levels of organic contaminants. The present study investigated ozonation performance of RO concentrate from municipal wastewater treatment in a stirred semi-batch reactor. In this work, carbamazepine (CBZ, as a representative of ozone-reactive micropollutants) and ketoprofen (KET, one of ozone-resistant organic chemicals) were selected as target micropollutants. The absence of dissolved ozone within the first 60 min corresponding to initial ozone demand (IOD) complement suggested that chemical reactions took place quite fast, and ozone mass transfer was considered as a limiting step. A complete elimination of CBZ and an excellent removal of KET were observed in this period, indicating that molecular ozone was a dominated oxidant responsible for the decomposition of the target micropollutants in RO concentrate containing initial dissolved organic carbon (DOC0, ~50.8 mg L−1). >90% of ozone-reactive CBZ was eliminated at a low ozone dose of 0.33 g consumed ozone per g DOC0. More ozone dose requirement for an equivalent removal of KET was ascribed to its low ozone kinetic rate constant below 10 L mol−1 s−1. In addition, the presence of high contents of organic matters and alkalinity in RO concentrate exhibited pronounced effects on the degradation of KET because of a competition with oxidants. Overall, ozonation appeared to be a promising alternative for disposal of RO concentrate in terms of micropollutant removal. However, additional technologies should be followed to further enhance the degradation rate of organic matters for a zero liquid discharge treatment scheme.
    Keywords alkalinity ; dissolved organic carbon ; ketoprofen ; mass transfer ; municipal wastewater ; organic compounds ; oxidants ; ozonation ; ozone ; pollutants ; reverse osmosis ; wastewater treatment ; water reuse
    Language English
    Dates of publication 2020-0515
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2020.137150
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  6. Article: A review on the application of ozonation to NF/RO concentrate for municipal wastewater reclamation

    Deng, Hui

    Journal of hazardous materials. 2020 June 05, v. 391

    2020  

    Abstract: Nanofiltration (NF) and reverse osmosis (RO) technology have gained worldwide acceptance for reclamation of municipal wastewater due to their excellent efficiencies in rejecting a wide spectrum of organic pollutants, bacteria, dissolved organic matters ... ...

    Abstract Nanofiltration (NF) and reverse osmosis (RO) technology have gained worldwide acceptance for reclamation of municipal wastewater due to their excellent efficiencies in rejecting a wide spectrum of organic pollutants, bacteria, dissolved organic matters and inorganic salts. However, the application of NF/RO process produces inevitably a large volume of concentrated waste stream (NF/RO concentrate), which is generally characterised by high levels of inorganic and organic substances, a low biodegradation and potential ecotoxicity. At present, one of the most significant concerns for this process is regarding the sustainable management of municipal NF/RO concentrate, due to a potentially serious threat to water receiving body. It should therefore be further disposed or treated by effective technologies such as ozonation in a cost-effective way, aiming to minimize the potential environmental risk associated with the presence of emerging micropollutants (ng L−1 - μg L−1). This paper provides an overview on the disposal of NF/RO concentrate from municipal wastewater by ozonation process. This is a first review to present entirely ozonation efficiency of NF/RO concentrate in terms of elimination of emerging micropollutants, degradation of organic matters, as well as toxicity assessment. In addition, ozone combining biological activated carbon (BAC) or other advanced oxidation processes (AOPs) is also discussed, aiming to further improve mineralization of ozone-recalcitrant substances in NF/RO concentrate. Finally, further research directions regarding the management of NF/RO concentrate are proposed.
    Keywords activated carbon ; bacteria ; biodegradation ; cost effectiveness ; ecotoxicology ; environmental assessment ; inorganic salts ; mineralization ; municipal wastewater ; nanofiltration ; organic matter ; oxidation ; ozonation ; ozone ; pollutants ; reverse osmosis ; toxicity ; water reuse
    Language English
    Dates of publication 2020-0605
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2020.122071
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  7. Article ; Online: Environment-Sensitive Fluorescent Probe Enables Assessment of Anaplastic Lymphoma Kinase Activity in Nonsmall Cell Lung Cancer.

    Zhou, Xinglong / Lei, Qian / Xiao, Zhaolin / Song, Chao / Deng, Hui

    Analytical chemistry

    2024  Volume 96, Issue 8, Page(s) 3525–3534

    Abstract: Anaplastic lymphoma kinase ( ...

    Abstract Anaplastic lymphoma kinase (
    MeSH term(s) Humans ; Animals ; Mice ; Carcinoma, Non-Small-Cell Lung/diagnostic imaging ; Carcinoma, Non-Small-Cell Lung/drug therapy ; Carcinoma, Non-Small-Cell Lung/genetics ; Anaplastic Lymphoma Kinase/genetics ; Fluorescent Dyes ; Lung Neoplasms/diagnostic imaging ; Lung Neoplasms/drug therapy ; Lung Neoplasms/genetics ; Protein-Tyrosine Kinases ; Protein Kinase Inhibitors/pharmacology
    Chemical Substances Anaplastic Lymphoma Kinase (EC 2.7.10.1) ; Fluorescent Dyes ; Protein-Tyrosine Kinases (EC 2.7.10.1) ; Protein Kinase Inhibitors
    Language English
    Publishing date 2024-02-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.3c05337
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Response of garlic (Allium sativum L.) to the combined toxicity of microplastics and arsenic.

    Song, Zhengguo / Chen, Zimin / Dong, Youming / Deng, Hui / Gao, Minling

    The Science of the total environment

    2024  Volume 923, Page(s) 171432

    Abstract: The extensive utilization of mulch films in agricultural settings, coupled with the persistence of microplastic remnants in soil following the natural degradation of plastics, has given rise to detrimental microplastic impacts on crops. Arsenic (As) ... ...

    Abstract The extensive utilization of mulch films in agricultural settings, coupled with the persistence of microplastic remnants in soil following the natural degradation of plastics, has given rise to detrimental microplastic impacts on crops. Arsenic (As) contamination in the environment is known to accumulate in crops through aquatic pathways or soil. Garlic (Allium sativum L.), a globally popular crop and seasoning, contains alliin, a precursor of its flavor compounds with medicinal properties. While alliin exhibits antimicrobial and antioxidant effects in garlic, its response to microplastics and arsenic has not been thoroughly investigated, specifically in terms of microplastic or As uptake. This study aimed to explore the impact of varied stress concentrations of microplastics on the toxicity, migration, and accumulation of As compounds. Results demonstrated that polystyrene (PS) fluorescent microspheres, with an 80 nm diameter, could permeate garlic bulbs through the root system, accumulating within vascular tissues and intercellular layers. Low concentrations of PS (10 and 20 mg L
    MeSH term(s) Antioxidants/metabolism ; Garlic/metabolism ; Microplastics/toxicity ; Microplastics/metabolism ; Plastics/metabolism ; Arsenic/toxicity ; Arsenic/metabolism ; Soil ; Cysteine/analogs & derivatives
    Chemical Substances Antioxidants ; Microplastics ; Plastics ; Arsenic (N712M78A8G) ; alliin (7I4L2D0E9G) ; Soil ; Cysteine (K848JZ4886)
    Language English
    Publishing date 2024-03-04
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.171432
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Impact of microplastics on microbial-mediated soil sulfur transformations in flooded conditions.

    Gao, Minling / Dong, Youming / Deng, Hui / Qiu, Weiwen / Song, Zhengguo

    Journal of hazardous materials

    2024  Volume 468, Page(s) 133857

    Abstract: As emerging environmental pollutants, microplastics have become a crucial focus in environmental science research. Despite this, the impact of microplastics on soil in flooding conditions remains largely unexplored. Addressing this gap, our study ... ...

    Abstract As emerging environmental pollutants, microplastics have become a crucial focus in environmental science research. Despite this, the impact of microplastics on soil in flooding conditions remains largely unexplored. Addressing this gap, our study examined the influence of polystyrene (PS) and polyphenylene sulfide (PPS) on the microbial populations in black soil, meadow soil, and paddy soil under flooded conditions. Given the significant regulatory influence exerted by microorganisms on sulfur transformations, our study was primarily focused on evaluating the microbial contributions to alterations in soil sulfur species. Our findings revealed several notable trends: In black soil, both PS and PPS led to a marked increase in the abundance of γ-proteobacteria and Subgroup_6, while reducing Clostridia. Ignavibacteria were found to be lower under PPS compared to PS. In meadow soil, the introduction of PPS resulted in increased levels of KD4-96 and γ-proteobacteria, while α-proteobacteria decreased. Chloroflexia under PPS was observed to be lower than under PS conditions. In paddy soil, our study identified a significant rise in Bacteroidia and Ignavibacteria, accompanied by a decrease in α-proteobacteria and γ-proteobacteria. γ-proteobacteria levels under PPS were notably higher than those under PS conditions. These shifts in microbial communities induced by both PS and PPS had a direct impact on adenosine 5'-phosphosulfate reductase, sulfite reductase, and polysulfide dioxygenase. Consequently, these changes led to soil organic sulfur decrease and sulfide increase. This study not only offers a theoretical framework but also provides empirical evidence for understanding the effects of microplastics on soil microorganisms and their role in regulating nutrient cycling, particularly in flood-prone conditions. Furthermore, this study underscores the importance of ensuring an adequate supply of sulfur in agricultural practices, such as rice and lotus root cultivation, to support optimal crop growth in the presence of microplastic pollution.
    MeSH term(s) Soil ; Plastics ; Microplastics ; Floods ; Bacteria/genetics ; Gammaproteobacteria ; Sulfur ; Oryza
    Chemical Substances Soil ; Plastics ; Microplastics ; Sulfur (70FD1KFU70)
    Language English
    Publishing date 2024-02-22
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2024.133857
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: [Role of collagen membrane in modified guided bone regeneration surgery using buccal punch flap approach: A retrospective and radiographical cohort study].

    Duan, Deng Hui / Wang, Hom Lay / Wang, En Bo

    Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences

    2023  Volume 55, Issue 6, Page(s) 1097–1104

    Abstract: Objective: To investigate whether the placement of absorbable collagen membrane increase the stability of alveolar ridge contour after guided bone regeneration (GBR) using buccal punch flap.: Methods: From June 2019 to June 2023, patients who ... ...

    Abstract Objective: To investigate whether the placement of absorbable collagen membrane increase the stability of alveolar ridge contour after guided bone regeneration (GBR) using buccal punch flap.
    Methods: From June 2019 to June 2023, patients who underwent GBR using buccal punch flap simultaneously with a single implant placement in posterior region (from first premolar to second molar) were divided into coverage group, in which particular bone graft was covered by collagen membrane and non-coverage group. Cone beam CT (CBCT) was taken before surgery (T0), immediately after surgery (T1), and 3-7 months after surgery (T2), and the thickness of the buccal bone plate at different levels (0, 2, 4, and 6 mm) below the smooth-rough interface of the implant (BBT-0, -2, -4, -6) was mea-sured after superimposition of CBCT models using Mimics software.
    Results: A total of 29 patients, including 15 patients in coverage group and 14 patients in non-coverage group, were investigated in this study. At T0, T1, and T2, there was no significant difference in BBT between the two groups (
    Conclusion: In the short term, the GBR using buccal punch flap with or without collagen membrane coverage can effectively repair the buccal implant bone defect. But collagen membrane coverage showed no additional benefit on alveolar ridge contour stability compared with non-membrane coverage.
    MeSH term(s) Humans ; Cohort Studies ; Retrospective Studies ; Alveolar Ridge Augmentation ; Collagen ; Cone-Beam Computed Tomography ; Bone Regeneration ; Dental Implantation, Endosseous
    Chemical Substances Collagen (9007-34-5)
    Language Chinese
    Publishing date 2023-12-14
    Publishing country China
    Document type English Abstract ; Journal Article
    ZDB-ID 2452593-5
    ISSN 1671-167X
    ISSN 1671-167X
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top